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Lab 26
Tissues of the Human Body
| Question | Answer |
|---|---|
| basement membrane | that upon which epithelial cells rest |
| collagenous fibers | thick filaments of protein found in connective tissues; lightly staining |
| columnar | cells that have a height significantly greater than their width |
| connective tissue | contains cells embedded in a proteinaceous matrix that was secreted by the cells; joins one tissue to another |
| cuboidal | cells that have a height that is roughly equivalent to their width |
| elastic fibers | long think filaments of protein found in matrix of connective tissue; stain darkly |
| epithelium | a lining or covering of a part of the body; always has a free surface |
| matrix | extracellular secretion of cells within connective tissue; cells "float" in this matrix |
| organ | combination of several tissues united to perform a specific function or group of functions |
| organ system | combination of several organs united to perform a specific function or group of functions |
| pseudostratified | appears to be mulilayered epithelial tissue, but in reality each cell rests on the basement membrane; illusion is result of cells that are of different heights |
| simple tissue | single layer of cells |
| squamous | flat cells |
| stratified | multilayered epithelial tissue; bottom layer rests on basement membrane, top layer has a free surface |
| tissue | a group of closely related cells united to carry out of specific function. |
| What are some examples of epithelial tissues? | kidney tubule, intestine, esophagus, and the trachea |
| What are some examples of connective tissues? | cartilage, bone, tendon, adipose, and blood |
| What are some examples of muscular tissues? | skeletal, cardiac, and visceral |
| What are some examples of nervous tissues? | spinal chord |